Valve for cooking vessels



R. H. WENTORF VALVE FOR COOKING VESSELS Jan. 4 1927. 1,612,845

Filed Dec. l2 1,921

Patented Jan. 4, 1927.

UNITED STATES i 1,612,845 PATENT OFFICE.

ROBERT E. WENTORF, OF WEST BEND, WISCONSIN. ASSIGNOB T0 WESTBENDALUMINUM COMPANY, A CORPORATION 0F WISCONSIN.

'VALVE FOB COOKING VESSELS.

Application illed December 12:*1921. Serial No. 521,802.

The invention relates to escape valves, and is more particularlydirected to that class of valves used for cooking vessels, such asboilers or Steamers and has for its primary object the provision of anautomatic poppet Other objects of the invention will ap ear from thefollowing descri tion, whie is directed to the preferred em odiment ofthe invention, reference being made to the accompanying drawing forminga part of the specification, in which- Fig. 1 is a top plan view of aboiler cover showing my invention applied thereto.

Fig. 2 is a vertical sectional view taken on line 2-2 of Fig. 1 showingthe valve in closed position.

Fig. 3 is a fragmental sectional view of Fig. 1 taken on line 2-2showing the valve in open position.

Fig. 4 is an enlarged detail view of the assembled valve.

Fig. 5 is an enlarged detail view of the stem of the valve.

Fig. 6 is an enlarged detail top plan view of the lower portion of thevalve with thek stem removed therefrom.

Referring now to the-.drawings for a more particular description of myinvention, the reference character 10 represents a cover for a boilerhaving a downwardly struck spherical concavity 11 in the approximatecenter thereof which has aperture 12 therethrough and concentric withconcavity 11, through which aperture stem 1'3 is adapted to havereciprocal movement, there being a clearance between the periphery ofaperture 12 and stem 13 for the escape of steam from the boiler whenpthevalve is in open position, as shown in Fig. 3. Stem 13 carries at itsupper. end a spherical closure member 14, which is adapted to seatwithin the concavity`1 1 and close aperture 12 when in closed position,as shown in Fig. 2. A weight 15 is carried by the lower en d of stem 13to retain the valve in closed position until such time as the ressure ofsteam within the boiler is sulliclent to raise the weight 15 by thepressure of the steam on the lower face of closure member 14intermediate the periphery of aperture 12 and valve stem 13.` Weight 15carries a plurality ofupstandin spacmg members 16 which spacing mem ersare adapted to contact with the underside of cover 10, thereby limitinthe upward movement of the closure mem er 14 with relation to the cover10. The weight 15 may of course be made of any suitable material and ofsuch shape and contour as may be deemed desirable, though I prefer toform this weight in the shape of a hemisphere, as shown in the drawings.

In assembling my improved valve with the cover of a boiler IV insertstem 13 downwardly through aperture 12 in the cover and through centralbore 17 in the weight 15 when the end of the stem may be flared in anysuitable manner, as shown at 18, Fig. 4.

Having thus described my invention, what I claim 1s:

1. The combination with the cover of a boiler having a concavo-convexportion formed from the material of said cover, a spherical closuremember adapted to seat in the concavity of said portion, a stem carriedby said member, a weight carried by the inner end of said stem, andspacing members carried by said weight and normally spaced from theinner side of said cover.

2. The combination with the cover of a cooking vessel having a concavespherical portion formed integrally with the cover and extending towardthe interior of the vessel with an aperture through the cover of thevessel at the center of the downwardly formedV spherical portion, thesaid aperture cutting away only av portion of the said downwardly formedspherical ortion, a spherical closure member adaptedp to seat in saiddownwardly formed spherical a stem secured to the closure mem er andbeing adapted to be reciprocably carried in the said aperture, and aweight carried by the lower end of said stem for normally seating theclosure member on its said seat to form -a substantially vapor tightclosure.

3.'The combination with the cover of a boiler having an aperturetherethrough with a valveseat surrounding said aperture formed by havingthe material of the cover rtion,

surroundin the aperture pressed downwardly in t e general form of a. sement of a sphere, a closure member for sai spherical valve scat having aco-operating surface in the form of a se ment of a sphere, a. stemconnected with sai closure member and being adapted to press downwardlythrou h said aperture, and a, weight earned by t e lower end of saidstem and being adapted to hold said closure member normally m conl0 tactwith said valve seat to close the valve.

In testimony whereof I have signed m name to this specication4 on this30th day of November, A. D. 1921.

ROBERT H. WENTORF.

